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plan ds-presegment-mapreduce-2 PR1. CAP 12K tok/unit · TRIGGER 25K · over% 게이트(0=auto/<=40=hybrid/>40=whole). 토큰추정=PR0 실 Qwen 캘리브 (KO 0.529/기타 0.217 tok/char). leaf=hier_decomp.builder 재사용 (leaf_hard_max=inf 로 window-split 억제). 순수함수·DB/IO 0·배선은 PR2. tests/summarize_units 15 passed. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>